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GROUP-I TEST
X-MATHEMATICS (5 chapters)
Time: 2 ½ hrs.
Max. Marks: 100
General instructions:
(i)
This question paper consists of four sections. Read the note carefully under each section
before answering them.
(ii)
The rough work should be shown at the bottom of the pages of the Answer book.
(iii) Use of calculator and electronic devices not permitted.
SECTION-A
Note: (i) Answer all the 15 questions.
(ii) Choose the correct answer in each question. Each of these questions contains four
options with just one correct option.
(iii) Each question carries one mark.
[15 x 1 = 15]
1. If { ( 7 , 11 ) , (5 , a) } represents a constant function , then the value of ‘a ‘ is
a) 7
b) 11
c) 5
d) 9
2. If the range of a function is a singleton set , then it is
a) a constant function
b) an identity function
function.
c) a bijective function d) an one – one
3. The common ratio of the G.P. am-n , am , am+n is
a) am
b) a-m
c) an
d) a-n
4. If a, b, c are in G.P, then a-b / b-c is equal to
a) a / b
b) b/a
c) a/c
d) c/b
5. If the system 6x – 2y = 3, kx – y = 2 has a unique solution, then
a)K=3 b) k≠3
c) k = 4 d) k≠4
6. The quotient when x3-5x2+7x-4 is divided by x-1 is
a) 𝑥 2 +4x+3 b) x2-4x+3
c) x2-4x-3
d) x2+4x-3
7.Matrix A is of order 2x3 and B is of order 3x2 then order of matrix BA is --a) 3x3
b) 2x3
c) 2x2
d) 3x2
2 −3
8.The cofactor of 1 in 6 0
1 5
a) -12
b) 18
5
4 is
−7
c) -7
d) 7
9. If the points (2,5), (4,6) and (a,a) are collinear, then the value of a is equal to
a) -8
b) 4
c) -4
d) 8
10. The point of intersection of the straight lines y=0 and x=-4 is
a) (0,-4)
b) (-4,0)
c) (0,4)
d) (4,0)
11. The value of 3+6+9+………….+60 is equal to
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a) 510
b) 570
c) 600
12. If 𝛼 + 𝛽 = 14 𝑎𝑛𝑑 𝛼 − 𝛽 = 2 3, 𝑡ℎ𝑒𝑛 𝛼𝛽 =
a) 42
b) 44
c) 46
d) 630
d) 48
13. The LCM of 6𝑥 2 𝑦, 9𝑥 2 𝑦𝑧, 12𝑥 2 𝑦 2 𝑧 is
a) 36𝑥𝑦 2 𝑧 2
𝑏) 36𝑥 2 𝑦 2 𝑧 c) 36𝑥 2 𝑦 2 𝑧 2
d) 36𝑥𝑦 2 𝑧
46
21
14. The area of the triangle formed by the points (0, 0), ( 7 , 0) and (0,23 ) is
a) 1
b) 2
c) 3
d) 4
15. The slope of a straight line parallel to x-axis is
a) 0
b) 1
c) -1
d) not defined
SECTION-B
Note: (i) Answer 10 questions.
(ii) Answer any 9 questions from the first 14 questions. Question No.30 is compulsory.
(iii) Each question carries two marks.
[10 x 2 = 20]
16. Use Venn diagram to verify (A∩ B) U (A\B) = A.
17. For the given function F={(1,3),(2,5),(4,7),(5,9),(3,1)}, write the domain and range.
18. Given n(A)=285, n(
B)=195, n(U)=500, n(AUB)=410, find n(A`UB`).
19. Find the sum of 1+2+3+…………. + 45.
20. Solve by elimination method: x+2y=7, x-2y=1
21.Find the quotient and remainder of, (2𝑥 4 − 7𝑥 3 − 13𝑥 2 + 63𝑥 − 48)÷ 2x-1
22. Find the value of k which roots are real and equal.
𝑥 2 + 2𝑘 𝑥 − 2 + 5=0
23. Form a quadratic equation whose roots are
4+ 7
2
and
4− 7
2
𝛼
𝛽
24. 𝐼𝑓 𝛼 𝑎𝑛𝑑 𝛽 𝑎𝑟𝑒 𝑡ℎ𝑒 𝑟𝑜𝑜𝑡𝑠 𝑜𝑓 3𝑥 2 − 5𝑥 + 2 = 0 then find the value of 𝛽 + 𝛼
8
1
25. . If A=
26. Let A=
3
5
5 2
−3 4
2
𝑎𝑛𝑑
1
, then find AT and (AT) T
8 −1
4 3
. Find the matrix C if C = 2A + B
27. Construct a 3 x 2 matrix A= [a ij] whose elements are given by a ij = 2i -3j.
28. Find the mid point of the line segment joining the points (1,-1) and (-5,3)
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29. Find the slope of the line passing through the points (3,-2) and (7,2).
𝑥 2 −4
30. a) Simplify: 𝑎 2 −1 ×
𝑎 3 −𝑎
𝑥 3 +2𝑥 2
(OR)
b)The coordinates of two vertices of a ∆𝐴𝐵𝐶 𝑎𝑟𝑒 𝐴 1,4 𝑎𝑛𝑑 𝐵 5,3 . 𝑇ℎ𝑒 𝑐𝑒𝑛𝑡𝑟𝑜𝑖𝑑 𝑜𝑓 𝑡ℎ𝑒 ∆𝐴𝐵𝐶
is (3,3). Find the coordinates of the third vertex C.
SECTION – C
Note: (i) Answer 9 questions.
(ii) Answer any 8 questions from the first 14 questions. Question No. 45 is compulsory.
(iii) Each question carries five marks.
[9 x 5 =45]
31. Let A= {10,15,20,25,30,35,40,45,50}, B={1,5,10,15,20,30} and
C={7,8,15,20,35,45,48}. Verify A\(BUC)=(A\B)∩(A\C)
32. A function f: [-7,6)  R is defined as follows
𝑥 2 + 2𝑥 + 1; −7 ≤ 𝑥 < −5
f(x)=
𝑥+5
; −5 ≤ 𝑥 ≥ 2
𝑥−1
;
2<𝑥>6
Find i) 2 f(-4) + 3 f(2)
ii) f(-7)-f(-3)
iii) 4 f(-3)+2 f(4)
f(-6)-3 f(1)
33. Let A={ 6,9,15,18,21}; B={1,2,4,5,6} and f: AB be defined by f(x)= x-3/3.
Represent f by i) an arrow diagram ii) a set of ordered pairs iii) a table iv) a graph
34. If the quotient on dividing 8𝑥 4 − 2𝑥 2 + 6𝑥 − 7 by 2x+1 is 4𝑥 3 + 𝑝𝑥 2 − 𝑞𝑥 + 3, then find
p,q and also the remainder.
35. Factorize 2𝑥 3 − 3𝑥 2 − 3𝑥 + 2 into linear factors.
36. If m-nx+28𝑥 2 + 12𝑥 3 + 9𝑥 4 is a perfect square then find the values of m and n.
37. Find a and b if 4𝑥 4 − 12𝑥 3 + 37𝑥 2 + 𝑎𝑥 + 𝑏 𝑖𝑠 𝑎 𝑝𝑒𝑟𝑓𝑒𝑐𝑡 𝑠𝑞𝑢𝑎𝑟𝑒.
38. If the equation (1+𝑚2 )𝑥 2 + 2𝑚𝑐𝑥 + 𝑐 2 − 𝑎2 = 0 ℎ𝑎𝑠 𝑒𝑞𝑢𝑎𝑙 𝑟𝑜𝑜𝑡𝑠, 𝑡ℎ𝑒𝑛 𝑝𝑟𝑜𝑣𝑒 𝑡ℎ𝑎𝑡 𝑐 2 = 𝑎2 1 + 𝑚2 .
39. If 𝛼 𝑎𝑛𝑑 𝛽 are the roots of 𝑥 2 − 3𝑥 − 1 = 0, then form a quadratic equation whose roots
1
1
are
and𝛽 2 .
𝛼2
40. Using the concept of slope, show that the points A(5, -2), B (4, -1) and C (1, 2) are collinear.
41. If the vertices of the triangle are (a, -3), (3, a), (-1, 5) and its area 12 sq.units, then find the value of a.
42. The vertices of ∆ABC are A(1,8) , B(-2,4), C(8,-5). If M and N are the midpoints of AB and
AC respectively, find the slope of MN and hence verify that MN is parallel to BC.
43. Find the equations of the straight lines each passing through the point (6,-2) and whose sum
of the intercepts is 5.
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44. Find the area of quadrilateral whose vertices are (-4,5) , (0,7), (5,-5) and (-4,-2).
45. a) Find the square root of the polynomial 𝑥 4 + 4𝑥 3 + 10𝑥 2 + 12𝑥 + 9. (OR)
b) Show that the straight lines 2x+3y+6=0 and 3x-2y-12=0 are perpendicular to each other.
SECTION-D
Note: (i) This section contains 2 questions, each with two alternatives.
(ii) Answer both the questions choosing either of the alternatives.
(iii) Each question carries 10 marks.
46. a) Construct a cyclic quadrilateral ABCD , where AB=6.5cm
∠𝐴𝐵𝐶 = 110°, 𝐵𝐶 = 5.5 𝑐𝑚 𝑎𝑛𝑑 𝐴𝐵 ‖ 𝐶𝐷.
[2 x 10 =20]
(OR)
b) Construct a cyclic quadrilateral ABCD with AB=7 cm, ∠A=80°, AD=4.5 cm and BC= 5cm.
47. a).The following table gives the cost and number of notebooks bought.
No. of note 2
4
6
8
10
12
books(x)
Cost Rs.y
30
60
90
120
150
180
Draw the graph and hence i) Find the cost of seven note books. ii) How many note books
can be bought for Rs. 165.
(OR)
b).The cost of the milk per litre is Rs.15. Draw the graph for the relation between the quantity and cost.
Hence find i) the proportionality constant, ii) the cost of 3 litres of milk.
No. of litres
1
2
3
4
5
(x)
Cost in Rs.
15
30
45
60
75
Prepared by,
Mr. B. MOHANKUMAR M.SC., B.ED
ASST. Teacher, Govt. Middle School,
Peruveli, Madurantakam TK.
Cell: 9787754734
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GROUP-II TEST
X-MATHEMATICS (5 chps)
Time: 2 ½ hrs.
Max. Marks: 100
General instructions:
(i)
This question paper consists of four sections. Read the note carefully under
each section before answering them.
(ii)
The rough work should be shown at the bottom of the pages of the Answer
book.
(iii)
Use of calculator and electronic devices not permitted.
SECTION-A
Note: (i) Answer all the 15 questions.
(ii) Choose the correct answer in each question. Each of these questions contains
four options with just one correct option.
(iii) Each question carries one mark.
[15 x 1 = 15]
1. In the triangles ABC and DEF, ∠𝐴=∠𝐸 𝑎𝑛𝑑 ∠𝐵 = ∠𝐹. Then AB: AC is
(a)DE:DF
(b)DE:EF
(c)EF:ED
(d)DE:EF
2.
The sides of two similar triangles are in the ratio 2:3, then their areas are in the ratio
(a) 9:4
(b) 4:9
(c) 2:3
(d) 3:2
3. Two chords AB and CD cut internally at E. If AE= 6cm, EB=8 cm and EC=4 cm,
Then ED is equal to
(a)14 cm
(b)12 cm
(c)10 cm
(d)32 cm
4. If a vertical stick 12 m long casts a shadow 8 m long on the ground and at the same time
a tower casts a shadow 40 m long on the ground, then the height of the tower is ______
(a) 40 m
(b) 50 m
(c) 75 m
(d) 60 m
5. If cosec x =17/8, then cos x = ____
(a) 17/8
(b) 8/17
(c) 15/17
(d) 17/15
(c) 1
(d) 0
3
6. If (1- 𝑐𝑜𝑠 2 𝜃) = 4 , 𝑡ℎ𝑒𝑛 𝑠𝑖𝑛𝜃 =
(a)
√3
2
1
(b)2
7. If the surface area of a sphere is 100𝜋 cm2 , then its radius is equal to
(a) 25 cm
(b) 100 cm
(c) 5 cm
(d) 10 cm
8. Base area of a circular cylinder is 80 cm2 . If its height is 5 cm, then the volume is equal to
400
(a)400cm3
(b)16 cm3
(c)200 cm3
(d) 3 cm3
9. If the radius of a sphere is half of the radius of another sphere, then their respective
volumes are in the ratio
(a)1:8
(b)2:1
(c)1:2
(d)8:1
10. Variance of first 11 natural numbers is
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(a) √5
(b) √10
(c) 5√2
11. For a collection of 11 items, ⅀x=132, then the arithmetic mean is
(a)11
(b)12
(c)14
(d) 10
(d)13
12. Standard deviation of a collection of data is 2√2. If each value is multiplied by 3, then the
standard deviation of the new data is,
(a)√12
(b)4√ 2
(c)6√ 2
(d)9√2
13. If ∅ 𝑖𝑠 𝑎𝑛 𝑖𝑚𝑝𝑜𝑠𝑠𝑖𝑏𝑙𝑒 𝑒𝑣𝑒𝑛𝑡, 𝑡ℎ𝑒𝑛 𝑃(∅)=
1
(a)1
(b)4
(c)0
1
(d)2
14. A fair die is thrown once. The probability of getting a prime or composite number is
5
1
(a)1
(b)0
(c)6
(d)6
15. The probability that a leap year will have 53 Fridays or 53 Saturdays is
2
1
4
3
(a)7
(b)7
(c)7
(d)7
SECTION-B
Note: (i) Answer 10 questions.
(ii) Answer any 9 questions from the first 14 questions. Question No.30 is
compulsory.
(iii) Each question carries two marks.
[10 x 2 = 20]
16. In a triangle ABC, D and E points on the sides AB and AC respectively such that DE II BC,
If AD=6 cm, DB=9 cm and AE=8 cm, then find AC.
17. In ∆ABC, the internal bisector AD of A meets the side BC at D. If BD=2.5 cm, AB=5 cm
and AC=4.2 cm then find DC.
18. AB and CD are two chords of a circle which intersect each other externally at P, if AB=4cm
BP=5cm and PD= 3cm, then find CD.
19. Prove that,
1−𝑠𝑖𝑛𝜃
1+𝑠𝑖𝑛𝜃
= sec𝜃 − 𝑡𝑎𝑛𝜃
𝑠𝑖𝑛𝜃
𝑐𝑜𝑠𝜃
20. Prove the identity 𝑐𝑜𝑠𝑒𝑐𝜃 + 𝑠𝑒𝑐𝜃 = 1
21. A ladder leaning against a vertical wall, makes an angle of 60º with the ground. The foot of
the ladder is 3.5 m away from the wall. Find the length of the ladder.
22. A solid right circular cylinder has radius of 14 cm and height of 8 cm. Find its curved surface
area and total surface area.
11352
23. Volume of a hollow sphere is 7 𝑐𝑚3 . If the outer radius is 8 cm, find the inner radius of
22
the sphere. (Take𝜋 = 7 ).
24. If the curved surface area of a solid hemisphere is 2772 sq.cm, then find its total surface area.
25. Calculate the standard deviation of the first 13 natural numbers.
26. Find the range and coefficient of range of 43,24,38,56,22,39,45
27. If the coefficient of variation of a collection of data is 57 and its S.D. is 6.84, then find the
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mean.
28. One number is chosen randomly from the integers 1 to 50. Find the probability that it is
divisible by 4 or 6.
29. If A and B are two events such that P(A) =1/4, P(B)=2/5 and P(AUB)=1/2, then find P(A∩B)
30. (a) The volume of a sphere is numerically equal to its surface area. Find its diameter.
(or)
(b) What is the lateral surface area of a cone when slant height is 10 cm and height is 8cm?
SECTION – C
Note: (i) Answer 9 questions.
(ii) Answer any 8 questions from the first 14 questions. Question No. 45 is
compulsory.
(iii) Each question carries five marks.
[9 x 5 =45]
31. State and prove the Angle Bisector Theorem.
32. The image of a tree on the film of a camera is of length 35mm, the distance from the lens to
the film is 42mm and the distance from the lens to the tree is 6m. How tall is the portion of
the tree being photographed?
33. If all sides of a parallelogram touch a circle, show that the parallelogram is a rhombus.
𝑡𝑎𝑛𝜃
𝑐𝑜𝑡𝜃
34. Prove that, 1−𝑐𝑜𝑡𝜃 + 1−𝑡𝑎𝑛𝜃 = 1 + 𝑡𝑎𝑛𝜃 + 𝑐𝑜𝑡𝜃
𝑚 2 −1
35. If tan𝜃 = 𝑛 𝑡𝑎𝑛𝛼 𝑎𝑛𝑑 𝑠𝑖𝑛𝜃 = 𝑚 𝑠𝑖𝑛𝛼, 𝑡ℎ𝑒𝑛 𝑝𝑟𝑜𝑣𝑒 𝑡ℎ𝑎𝑡 𝑐𝑜𝑠 2 𝜃 = 𝑛 2 −1 .
36. A vertical tree is broken by the wind. The top of the tree touches the ground and makes an
angle 30° with it. If the top of the tree touches the ground 30m away from its foot, then find
the actual height of the tree.
37. A heap of the paddy is in the form of a cone whose diameter is 4.2 m and height is 2.8 m.
If the heap is to be covered exactly by a canvas to protect it from rain, then find the area of
the canvas needed.
38. A lead pencil is in the shape of right circular cylinder. The pencil is 28 cm long and its radius
is 3mm. If the lead is of radius 1mm, then find the volume of the wood used in the pencil.
39. Water is flowing at the rate of 15 km/hr through a cylindrical pipe of diameter 14 cm into a
rectangular tank which is 50 m long and 44 m wide. In how many hours will the water level
in the tank raise by 21 cm?
40. The time (in seconds) taken by a group of people to walk across a pedestrian crossing is
given in the table below.
Time(in sec) 5-10
10-15
15-20
20-25
25-30
4
8
15
12
11
Calculate the variance and standard deviation of the data.
41. The mean and the standard deviation of a group of 20 items was found to be 40 and 15
respectively. While checking it was found that an item 43 was wrongly written as 53.
Calculate the correct mean and standard deviation.
42. The marks scored by two students A, B in a class are given below.
A
58
51
60
65
66
B
56
87
88
46
43
Who is more consistent?
43. A bag contains 5 red balls and some blue balls. If the probability of drawing a blue
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ball from the bag is thrice that of drawing a red ball, then find the number of blue
balls in the bag.
44. A bag contains 12 balls out of which ‘x’ balls are white. i) If one ball is drawn at
random, what is the probability that it will be a white ball. ii) If 6 more white balls are
put in the bag, the probability of drawing a white ball will be twice that of in (i).
Find ‘x’.
45. (a) A hollow sphere of internal and external diameter 4 cm and 8 cm respectively is melted
and recast into a cone diameter 8 cm. Find the height of the cone.
(or)
(b) A cup has the shape of a hemisphere surmounted by a cylinder. The diameter of the
hemisphere is 6 cm. The total height of the cup is 13 cm, find its volume.
SECTION-D
Note: (i) This section contains 2 questions, each with two alternatives.
(ii) Answer both the questions choosing either of the alternatives.
(iii) Each question carries 10 marks.
[2 x 10 =20]
46. (a) Construct a cyclic quadrilateral ABCD, given AB=6cm,∠𝐴𝐵𝐶=70°, BC=5cm and
∠𝐴𝐶𝐷 = 30° .
(or)
(b) Construct a cyclic quadrilateral ABCD where AB=6cm, AD=4.8cm, BD=8cm and
CD=5.5 cm
47. (a) A bus travels at a speed of 40 km/hr. Write the distance-time formula and draw the graph
of it. Hence, find the distance travelled in 3 hrs.
(or)
(b) Draw the graph of x y =20, x ,y > 0. Use the graph to find y when x=5, and to find x
when y=10.
Prepared by,
Mr. B. MOHANKUMAR M.SC., B.ED
ASST. Teacher, Govt. Middle School,
Peruveli, Madurantakam TK.
Cell: 9787754734